1998 Chrysler Cirrus crackling noise

There's a crackling noise that you can hear upon starting and right after slightly stepping on the gas. It lasts for a few seconds and stops. The noise is present when the car is parked and and the engine is running. I stepped on the gas and after I let go of my foot then there's the noise. Its like a crackling noise that you can hear somewhere around the engine itself. Maybe like a loose fan or belt. But the belts that I see seems not be loose anyhow. So it might be something inside.